IRST definitions

Irst

1) Infrared search and track
Found on https://www.crosswordclues.com/clue/irst

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IRST

Infrared Search and Track
Found on http://www.encyclo.co.uk/visitor-contributions.php

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IRST

Infra Red Search and Track System
Found on http://www.tornado-data.com/siteinfo/glossary.htm

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